Demolding agent rubber

Demolding Agent Rubber

The color of demolding agent rubber is milky white. This type of demolding agent rubber is typically composed of silicone oil, lubricating synthetic grease, additives, and surfactants, presenting as a milky white emulsion. Demolding agent rubber offers excellent isolation properties, effectively preventing materials like concrete from adhering to the mold during demolding. It also ensures a smooth, bright concrete surface free of pores and bubbles, while extending the mold's lifespan. The application methods for demolding agent rubber include wiping, brushing, or spraying it onto the mold surface after dilution, followed by pouring the molten material into the mold.

The main chemical components of demolding agent rubber include methyl silicone oil, water-soluble emulsion, styrene, polyvinyl chloride, phenolic resin, silicone oil, grease, and additives. These components collectively contribute to the performance and effectiveness of demolding agent rubber, ensuring its application efficacy and safety across various processes. Methyl silicone oil, a primary component, provides excellent lubricity and demolding effects, effectively reducing adhesion between the mold and the finished product. Water-soluble emulsion serves as the base for demolding agent rubber, ensuring good stability and dispersibility in water. Components such as styrene, polyvinyl chloride, and phenolic resin enhance the chemical resistance and thermal stability of demolding agent rubber, preventing dissolution when in contact with different resins. Silicone oil and grease further improve the smoothness and ease of cleaning, while additives are used to adjust and enhance the performance of demolding agent rubber. Demolding agent rubber is widely used in medium to high-temperature production demolding processes across various industries, including plastics, rubber products, foam rubber, and metal alloy die-casting. Its advantages include resistance to acids and alkalis, hardness tolerance in water, strong water solubility, excellent stability, and the ability to be diluted with water in any proportion without layering, breaking, or clumping. Additionally, demolding agent rubber is environmentally friendly, easy to clean, non-corrosive to products and molds, and ensures the secondary processing performance of products.

Performance Requirements

The role of demolding agent rubber is to smoothly separate the cured and formed product from the mold, resulting in a smooth and flat product while ensuring the mold can be used multiple times. Specific performance requirements are as follows:

1. Demolding performance (lubricity). Forms a uniform film and ensures dimensional accuracy for complex-shaped molded products.

2. Consistent demolding performance.

3. The appearance of the molded product is smooth and aesthetically pleasing, without attracting dust due to the application of sticky demolding agent rubber.

4. Excellent secondary processability. When demolding agent rubber transfers to the molded product, it has no adverse effects on processes such as electroplating, hot pressing, printing, coating, or bonding.

5. Easy application.

6. Heat resistance.

7. Stain resistance.

8. Good molding performance and high production efficiency.

9. Good stability. Maintains physical and chemical stability when used with compounding agents and materials.

10. Non-flammability, low odor, and low toxicity.

The mixing ratio of demolding agent rubber to water typically ranges from 1:3 to 1:10, and the specific ratio can be adjusted based on actual needs. For example, depending on the complexity of the casting and on-site conditions, the dilution ratio can be flexibly adjusted. Generally, the more complex the casting, the lower the dilution ratio.

The main components of demolding agent rubber include paraffin, stearic acid, vegetable oil, co-emulsifiers, and potassium hydroxide, produced through heating, melting, and emulsification processes. Its characteristics include operational safety, minimal environmental pollution, low harm to human health, excellent demolding effects, and biodegradability.

When using demolding agent rubber, it is recommended to dilute it with tap water and stir, determining the appropriate dilution ratio based on the complexity of the casting and on-site conditions. For complex castings, it is advisable to spray a uniform layer of diluted solution onto the mold after each demolding to ensure easy demolding for the next pouring.

Technical Specifications of Demolding Agent Rubber:

1. Appearance: Transparent white homogeneous liquid;

2. Solid content: ±20%;

3. pH value: 7-8;

4. Stability: No layering, no breaking, no clumping.